package com.common.util;

import org.apache.commons.lang3.StringUtils;

import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 * 日期处理工具类
 * 2019-2-18整理
 * @author wmm
 */

public class DateUtil {
    // ~ Static fields/initializers
    private static String defaultDatePattern = null;
    private static String timePattern = "HH:mm";
    private static Calendar cale = Calendar.getInstance();
    public static final String TS_FORMAT = DateUtil.getDatePattern() + " HH:mm:ss.S";
    /** 日期格式yyyy-MM字符串常量 */
    private static final String MONTH_FORMAT = "yyyy-MM";
    /** 日期格式yyyy-MM-dd字符串常量 */
    private static final String DATE_FORMAT = "yyyy-MM-dd";
    /** 日期格式HH:mm:ss字符串常量 */
    private static final String HOUR_FORMAT = "HH:mm:ss";
    /** 日期格式yyyy-MM-dd HH:mm:ss字符串常量 */
    private static final String DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    /** 某天开始时分秒字符串常量  00:00:00 */
    private static final String DAY_BEGIN_STRING_HHMMSS = " 00:00:00";
    /**  某天结束时分秒字符串常量  23:59:59  */
    public static final String DAY_END_STRING_HHMMSS = " 23:59:59";
    private static SimpleDateFormat sdf_date_format = new SimpleDateFormat(DATE_FORMAT);
    private static SimpleDateFormat sdf_hour_format = new SimpleDateFormat(HOUR_FORMAT);
    private static SimpleDateFormat sdf_datetime_format = new SimpleDateFormat(DATETIME_FORMAT);


    // ~ Methods
    // ================================================================

    public DateUtil() {
    }
    public  static String formationDate(Date date) {
        String dateString = "";
        // 获取系统当前时间
        Date now = new Date();
        try {
            long endTime = now.getTime();
            long currentTime= date.getTime();
            // 计算两个时间点相差的秒数
            long seconds = (endTime - currentTime);
            if (seconds<10*1000) {
                dateString ="刚刚";
            }else if (seconds<60*1000) {
                dateString = seconds/1000+"秒前";
            }else if (seconds<60*60*1000) {
                dateString = seconds/1000/60+"分钟前";
            }else if (seconds<60*60*24*1000) {
                dateString = seconds/1000/60/60+"小时前";
            }else if (seconds<60*60*24*1000*30L) {
                dateString =seconds/1000/60/60/24+ "天前";
            }else if (date.getYear()==now.getYear()) {//今年并且大于30天显示具体月日
                dateString = new SimpleDateFormat("MM-dd").format(date.getTime());
            }else if (date.getYear()!=now.getYear()) {//大于今年显示年月日
                dateString =  new SimpleDateFormat("yyyy-MM-dd").format(date.getTime());
            }else{
                dateString =  new SimpleDateFormat("yyyy-MM-dd").format(date);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return dateString;

    }
    /**
     * 获得服务器当前日期及时间，以格式为：yyyy-MM-dd HH:mm:ss的日期字符串形式返回
     * 
     *  
     * @return
     */
    public static String getDateTime() {
        try {
            return sdf_datetime_format.format(cale.getTime());
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 获得服务器当前日期，以格式为：yyyy-MM-dd的日期字符串形式返回
     * 
     *  
     * @return
     */
    public static String getDate() {
        try {
            return sdf_date_format.format(cale.getTime());
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 获得服务器当前时间，以格式为：HH:mm:ss的日期字符串形式返回
     * 
     *  
     * @return
     */
    public static String getTime() {
        String temp = " ";
        try {
            temp += sdf_hour_format.format(cale.getTime());
            return temp;
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 统计时开始日期的默认值
     * 
     *  
     * @return
     */
    public static String getStartDate() {
        try {
            return getYear() + "-01-01";
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 统计时结束日期的默认值
     * 
     *  
     * @return
     */
    public static String getEndDate() {
        try {
            return getDate();
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 获得服务器当前日期的年份
     * 
     *  
     * @return
     */
    public static String getYear() {
        try {
            return String.valueOf(cale.get(Calendar.YEAR));
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 获得服务器当前日期的月份
     * 
     *  
     * @return
     */
    public static String getMonth() {
        try {
            java.text.DecimalFormat df = new java.text.DecimalFormat();
            df.applyPattern("00;00");
            return df.format((cale.get(Calendar.MONTH) + 1));
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 获得服务器在当前月中天数
     * 
     *  
     * @return
     */
    public static String getDay() {
        try {
            return String.valueOf(cale.get(Calendar.DAY_OF_MONTH));
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 比较两个日期相差的天数
     * 
     * @param date1
     * @param date2
     * @return
     */
    public static int getMargin(String date1, String date2) {
        int margin;
        try {
            ParsePosition pos = new ParsePosition(0);
            ParsePosition pos1 = new ParsePosition(0);
            Date dt1 = sdf_date_format.parse(date1, pos);
            Date dt2 = sdf_date_format.parse(date2, pos1);
            long l = dt1.getTime() - dt2.getTime();
            margin = (int) (l / (24 * 60 * 60 * 1000));
            return margin;
        } catch (Exception e) {
            return 0;
        }
    }

    /**
     * 比较两个日期相差的天数
     * 
     *  
     * @param date1
     * @param date2
     * @return
     */
    public static double getDoubleMargin(String date1, String date2) {
        double margin;
        try {
            ParsePosition pos = new ParsePosition(0);
            ParsePosition pos1 = new ParsePosition(0);
            Date dt1 = sdf_datetime_format.parse(date1, pos);
            Date dt2 = sdf_datetime_format.parse(date2, pos1);
            long l = dt1.getTime() - dt2.getTime();
            margin = (l / (24 * 60 * 60 * 1000.00));
            return margin;
        } catch (Exception e) {
            return 0;
        }
    }

    /**
     * 比较两个日期相差的月数
     * 
     * @param date1
     * @param date2
     * @return
     */
    public static int getMonthMargin(String date1, String date2) {
        int margin;
        try {
            margin = (Integer.parseInt(date2.substring(0, 4)) - Integer.parseInt(date1.substring(0, 4))) * 12;
            margin += (Integer.parseInt(date2.substring(4, 7).replaceAll("-0",
                    "-")) - Integer.parseInt(date1.substring(4, 7).replaceAll("-0", "-")));
            return margin;
        } catch (Exception e) {
            return 0;
        }
    }

    /**
     * 返回日期加X天后的日期
     * 
     *  
     * @param date
     * @param i
     * @return
     */
    public static String addDay(String date, int i) {
        try {
            GregorianCalendar gCal = new GregorianCalendar(
                    Integer.parseInt(date.substring(0, 4)),
                    Integer.parseInt(date.substring(5, 7)) - 1,
                    Integer.parseInt(date.substring(8, 10)));
            gCal.add(GregorianCalendar.DATE, i);
            return sdf_date_format.format(gCal.getTime());
        } catch (Exception e) {
            return getDate();
        }
    }

    /**
     * 返回日期加X月后的日期
     * 
     *  
     * @param date
     * @param i
     * @return
     */
    public static String addMonth(String date, int i) {
        try {
            GregorianCalendar gCal = new GregorianCalendar(
                    Integer.parseInt(date.substring(0, 4)),
                    Integer.parseInt(date.substring(5, 7)) - 1,
                    Integer.parseInt(date.substring(8, 10)));
            gCal.add(GregorianCalendar.MONTH, i);
            return sdf_date_format.format(gCal.getTime());
        } catch (Exception e) {
            return getDate();
        }
    }

    /**
     * 返回日期加X年后的日期
     * 
     *  
     * @param date
     * @param i
     * @return
     */
    public static String addYear(String date, int i) {
        try {
            GregorianCalendar gCal = new GregorianCalendar(
                    Integer.parseInt(date.substring(0, 4)),
                    Integer.parseInt(date.substring(5, 7)) - 1,
                    Integer.parseInt(date.substring(8, 10)));
            gCal.add(GregorianCalendar.YEAR, i);
            return sdf_date_format.format(gCal.getTime());
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 返回某年某月中的最大天
     * 
     *  
     * @return
     */
    public static int getMaxDay(int iyear, int imonth) {
        int day = 0;
        try {
            if (imonth == 1 || imonth == 3 || imonth == 5 || imonth == 7
                    || imonth == 8 || imonth == 10 || imonth == 12) {
                day = 31;
            } else if (imonth == 4 || imonth == 6 || imonth == 9 || imonth == 11) {
                day = 30;
            } else if ((0 == (iyear % 4)) && (0 != (iyear % 100)) || (0 == (iyear % 400))) {
                day = 29;
            } else {
                day = 28;
            }
            return day;
        } catch (Exception e) {
            return 1;
        }
    }

    /**
     * 格式化日期
     * 
     *  
     * @param orgDate
     * @param Type
     * @param Span
     * @return
     */
    @SuppressWarnings("static-access")
    public String rollDate(String orgDate, int Type, int Span) {
        try {
            String temp = "";
            int iyear, imonth, iday;
            int iPos = 0;
            char seperater = '-';
            if (orgDate == null || orgDate.length() < 6) {
                return "";
            }

            iPos = orgDate.indexOf(seperater);
            if (iPos > 0) {
                iyear = Integer.parseInt(orgDate.substring(0, iPos));
                temp = orgDate.substring(iPos + 1);
            } else {
                iyear = Integer.parseInt(orgDate.substring(0, 4));
                temp = orgDate.substring(4);
            }

            iPos = temp.indexOf(seperater);
            if (iPos > 0) {
                imonth = Integer.parseInt(temp.substring(0, iPos));
                temp = temp.substring(iPos + 1);
            } else {
                imonth = Integer.parseInt(temp.substring(0, 2));
                temp = temp.substring(2);
            }

            imonth--;
            if (imonth < 0 || imonth > 11) {
                imonth = 0;
            }

            iday = Integer.parseInt(temp);
            if (iday < 1 || iday > 31)
                iday = 1;

            Calendar orgcale = Calendar.getInstance();
            orgcale.set(iyear, imonth, iday);
            temp = this.rollDate(orgcale, Type, Span);
            return temp;
        } catch (Exception e) {
            return "";
        }
    }

    public static String rollDate(Calendar cal, int Type, int Span) {
        try {
            String temp = "";
            Calendar rolcale;
            rolcale = cal;
            rolcale.add(Type, Span);
            temp = sdf_date_format.format(rolcale.getTime());
            return temp;
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 返回默认的日期格式
     * 
     *  
     * @return
     */
    public static synchronized String getDatePattern() {
        defaultDatePattern = "yyyy-MM";
        return defaultDatePattern;
    }
    public static Date getDate(String time){
        try {
            return new SimpleDateFormat(DATETIME_FORMAT).parse(time);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return new Date();
    }
    /**
     * 将指定日期按默认格式进行格式代化成字符串后输出如：yyyy-MM-dd
     * 
     *  
     * @param aDate
     * @return
     */
    public static final String getDate(Date aDate) {
        SimpleDateFormat df = null;
        String returnValue = "";
        if (aDate != null) {
            df = new SimpleDateFormat(getDatePattern());
            returnValue = df.format(aDate);
        }
        return (returnValue);
    }

    /**
     * 取得给定日期的时间字符串，格式为当前默认时间格式
     * 
     *  
     * @param theTime
     * @return
     */
    public static String getTimeNow(Date theTime) {
        return getDateTime(timePattern, theTime);
    }

    /**
     * 取得当前时间的Calendar日历对象
     * 
     *  
     * @return
     * @throws ParseException
     */
    public Calendar getToday() throws ParseException {
        Date today = new Date();
        SimpleDateFormat df = new SimpleDateFormat(getDatePattern());
        String todayAsString = df.format(today);
        Calendar cal = new GregorianCalendar();
        cal.setTime(convertStringToDate(todayAsString));
        return cal;
    }

    /**
     * 将日期类转换成指定格式的字符串形式
     * 
     *  
     * @param aMask
     * @param aDate
     * @return
     */
    public static final String getDateTime(String aMask, Date aDate) {
        SimpleDateFormat df = null;
        String returnValue = "";

        if (aDate == null) {
        } else {
            df = new SimpleDateFormat(aMask);
            returnValue = df.format(aDate);
        }
        return (returnValue);
    }

    /**
     * 将指定的日期转换成默认格式的字符串形式
     * 
     *  
     * @param aDate
     * @return
     */
    public static final String convertDateToString(Date aDate) {
        return getDateTime(getDatePattern(), aDate);
    }

    /**
     * 将日期字符串按指定格式转换成日期类型
     * 
     *  
     * @param aMask 指定的日期格式，如:yyyy-MM-dd
     * @param strDate 待转换的日期字符串
     * @return
     * @throws ParseException
     */
    public static final Date convertStringToDate(String aMask, String strDate)
            throws ParseException {
        SimpleDateFormat df = null;
        Date date = null;
        df = new SimpleDateFormat(aMask);

        try {
            date = df.parse(strDate);
        } catch (ParseException pe) {
            throw pe;
        }
        return (date);
    }

    /**
     * 将日期字符串按默认格式转换成日期类型
     * 
     *  
     * @param strDate
     * @return
     * @throws ParseException
     */
    public static Date convertStringToDate(String strDate)
            throws ParseException {
        Date aDate = null;

        try {
            aDate = convertStringToDate(getDatePattern(), strDate);
        } catch (ParseException pe) {
            throw new ParseException(pe.getMessage(), pe.getErrorOffset());
        }
        return aDate;
    }

    /**
     * 返回一个JAVA简单类型的日期字符串
     * 
     *  
     * @return
     */
    public static String getSimpleDateFormat() {
        SimpleDateFormat formatter = new SimpleDateFormat();
        String NDateTime = formatter.format(new Date());
        return NDateTime;
    }

    /**
     * 将指定字符串格式的日期与当前时间比较
     * @author DYLAN
     *  Feb 17, 2012
     * @param strDate 需要比较时间
     * @return
     *      <p>
     *      int code
     *      <ul>
     *      <li>-1 当前时间 < 比较时间 </li>
     *      <li> 0 当前时间 = 比较时间 </li>
     *      <li>>=1当前时间 > 比较时间 </li>
     *      </ul>
     *      </p>
     */
    public static int compareToCurTime (String strDate) {
        if (StringUtils.isBlank(strDate)) {
            return -1;
        }
        Date curTime = cale.getTime();
        String strCurTime = null;
        try {
            strCurTime = sdf_datetime_format.format(curTime);
        } catch (Exception e) {
        }
        if (StringUtils.isNotBlank(strCurTime)) {
            return strCurTime.compareTo(strDate);
        }
        return -1;
    }

    /**
     * 为查询日期添加最小时间
     *
     * @return
     */
    @SuppressWarnings("deprecation")
    public static Date addStartTime(Date param) {
        Date date = param;
        try {
            date.setHours(0);
            date.setMinutes(0);
            date.setSeconds(0);
            return date;
        } catch (Exception ex) {
            return date;
        }
    }

    /**
     * 为查询日期添加最大时间
     *
     * @return
     */
    @SuppressWarnings("deprecation")
    public static Date addEndTime(Date param) {
        Date date = param;
        try {
            date.setHours(23);
            date.setMinutes(59);
            date.setSeconds(0);
            return date;
        } catch (Exception ex) {
            return date;
        }
    }

    /**
     * 返回系统现在年份中指定月份的天数
     *
     * @return 指定月的总天数
     */
    @SuppressWarnings("deprecation")
    public static String getMonthLastDay(int month) {
        Date date = new Date();
        int[][] day = { { 0, 30, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
                { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };
        int year = date.getYear() + 1900;
        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
            return day[1][month] + "";
        } else {
            return day[0][month] + "";
        }
    }

    /**
     * 返回指定年份中指定月份的天数
     *
     * @return 指定月的总天数
     */
    public static String getMonthLastDay(int year, int month) {
        int[][] day = { { 0, 30, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
                { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };
        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
            return day[1][month] + "";
        } else {
            return day[0][month] + "";
        }
    }

    /**
     * 判断是平年还是闰年
     * 
     *  
     * @param year
     * @return
     */
    public static boolean isLeapyear(int year) {
        if ((year % 4 == 0 && year % 100 != 0) || (year % 400) == 0) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * 取得当前时间的日戳
     * 
     *  
     * @return
     */
    @SuppressWarnings("deprecation")
    public static String getTimestamp() {
        Date date = cale.getTime();
        String timestamp = "" + (date.getYear() + 1900) + date.getMonth()
                + date.getDate() + date.getMinutes() + date.getSeconds()
                + date.getTime();
        return timestamp;
    }

    /**
     * 取得指定时间的日戳
     *
     * @return
     */
    @SuppressWarnings("deprecation")
    public static String getTimestamp(Date date) {
        String timestamp = "" + (date.getYear() + 1900) + date.getMonth()
                + date.getDate() + date.getMinutes() + date.getSeconds()
                + date.getTime();
        return timestamp;
    }

    public static void main(String[] args) {
        System.out.println(getYear() + "|" + getMonth() + "|" + getDate());
    }
}
